feat: Implement circular arrow key navigation

The previous implementation of arrow key navigation was incomplete, only handling a few specific transitions. This made navigating the grid of actions with the keyboard feel broken and unintuitive.

This commit replaces the sparse `if/else` logic with a comprehensive `switch` statement for each arrow key direction (`up`, `down`, `left`, `right`). This ensures that navigation is circular and predictable from any focused action button, wrapping around the 2x2 grid as expected.

Author: Cyclenerd

Shutdown/ContentView.swift

@@ -130,34 +130,62 @@ struct ContentView: View {
     }
 
     private func handleRightArrowKey() {
-        if focusedAction == .sleepComputer {
+        switch focusedAction {
+        case .sleepComputer:
             focusedAction = .restartComputer
-        } else if focusedAction == .shutdownComputer {
+        case .restartComputer:
+            focusedAction = .sleepComputer
+        case .shutdownComputer:
             focusedAction = .logoutUser
+        case .logoutUser:
+            focusedAction = .shutdownComputer
+        case .none:
+            focusedAction = .sleepComputer
         }
     }
 
     private func handleLeftArrowKey() {
-        if focusedAction == .restartComputer {
+        switch focusedAction {
+        case .sleepComputer:
+            focusedAction = .restartComputer
+        case .restartComputer:
             focusedAction = .sleepComputer
-        } else if focusedAction == .logoutUser {
+        case .shutdownComputer:
+            focusedAction = .logoutUser
+        case .logoutUser:
             focusedAction = .shutdownComputer
+        case .none:
+            focusedAction = .sleepComputer
         }
     }
 
     private func handleUpArrowKey() {
-        if focusedAction == .shutdownComputer {
+        switch focusedAction {
+        case .sleepComputer:
+            focusedAction = .shutdownComputer
+        case .restartComputer:
+            focusedAction = .logoutUser
+        case .shutdownComputer:
             focusedAction = .sleepComputer
-        } else if focusedAction == .logoutUser {
+        case .logoutUser:
             focusedAction = .restartComputer
+        case .none:
+            focusedAction = .sleepComputer
         }
     }
 
     private func handleDownArrowKey() {
-        if focusedAction == .sleepComputer {
+        switch focusedAction {
+        case .sleepComputer:
             focusedAction = .shutdownComputer
-        } else if focusedAction == .restartComputer {
+        case .restartComputer:
             focusedAction = .logoutUser
+        case .shutdownComputer:
+            focusedAction = .sleepComputer
+        case .logoutUser:
+            focusedAction = .restartComputer
+        case .none:
+            focusedAction = .sleepComputer
         }
     }
 }